BLOOD SUGAR & INSULIN RESISTANCE · STAMFORD, CT
Get to the Root of Your Blood Sugar
A normal fasting glucose doesn't always mean you're in the clear. Dr. Lisa Gengo looks past one number to insulin levels, metabolic health, and family history—then helps you course-correct with more good food, not restriction.
Can Functional Medicine Help If My Blood Sugar Is "Normal"—Even If I Feel Off?
Insulin resistance, the root of most blood sugar problems, can develop years before fasting glucose or HbA1c looks abnormal. Dr. Lisa Gengo looks past a single blood sugar number to insulin levels, metabolic health, and family history—often catching the shift early, while standard labs still look fine. The goal isn't another restrictive diet. It's finding what's actually driving your blood sugar up, and building a plan around more good food, not less.
Why a Former Cardiac Surgery PA Takes Blood Sugar Personally
Before training in functional medicine, Dr. Gengo spent years working in cardiac surgery, including as Chief Physician Assistant at NewYork-Presbyterian/Weill Cornell. There, she saw firsthand how blood sugar and metabolic dysfunction show up years later as heart disease—long after a fasting glucose number looked normal.
That experience shapes how she evaluates blood sugar today. She doesn't wait for a diagnosis of prediabetes or type 2 diabetes to start asking questions. She looks at the whole metabolic picture—insulin, inflammation, weight distribution, family history—to find what's happening now, while there's still time to change course.
"Normal" Blood Sugar Doesn't Always Mean Low Risk
According to the CDC, more than 1 in 3 American adults has prediabetes—and most don't know it. Insulin resistance can develop gradually over years, often while fasting glucose and HbA1c still look normal.
Think of insulin as a key that lets sugar move from your blood into your cells. With insulin resistance, the locks become harder to open, so your pancreas compensates by producing more insulin. For a while, that keeps your blood sugar in range—so your labs look fine—even as the underlying problem builds underneath the surface.
Why Blood Sugar Is a Heart Health Issue
Insulin resistance rarely travels alone. It's closely connected to metabolic syndrome—a cluster that includes abdominal weight, high blood pressure, high triglycerides, low HDL cholesterol, and elevated blood sugar. Together, these factors significantly raise the risk of heart disease and stroke.
After years working in cardiac surgery, Dr. Gengo doesn't look at blood sugar as an isolated number. Metabolic health and cardiovascular health are deeply connected, which is why she evaluates the whole picture—not just a fasting glucose result—for anyone concerned about their long-term health.
Blood Sugar & Metabolic Concerns Dr. Gengo Helps You Get to the Root Of
Every evaluation starts with your history, your symptoms, and your numbers—not a one-size-fits-all protocol.
Prediabetes & Insulin Resistance
Catching the shift before it becomes a diagnosis, not after.
Unexplained Weight Gain
Especially weight that collects around the middle and resists diet and exercise alone.
Energy Crashes & Sugar Cravings
That post-lunch slump and the cravings that feel impossible to control.
PCOS & Irregular Periods
Insulin resistance is closely tied to PCOS and menstrual irregularity.
Elevated Triglycerides or Low HDL
Often an early clue to insulin resistance, even with normal blood sugar.
Family History of Diabetes
A parent or sibling with type 2 diabetes raises your own risk—worth evaluating early.
Metabolic Syndrome
The cluster of abdominal weight, blood pressure, triglycerides, and blood sugar that raises heart risk.
A Closer Look at Your Blood Sugar
Conventional care often waits for a lab value to cross a diagnostic threshold. Functional medicine asks an earlier question: why is your body becoming less responsive to insulin, and what can we do about it now? Depending on your symptoms and history, evaluation may include:
- Fasting glucose and HbA1c
- Fasting insulin, when appropriate
- A lipid panel, including the triglyceride-to-HDL ratio
- Waist measurement and blood pressure
- Thyroid function and other factors that can affect metabolism
- Medications, sleep, and stress that may be contributing
The goal isn't to order every test available. It's to ask the right questions so we can choose the right ones.
More Good Food, Not Less
This isn't about eating less or cutting out everything you love. It's about adding more of the foods that support steady blood sugar: protein and fiber at every meal, colorful vegetables, healthy fats, and a short walk after eating. Many people find their cravings ease over time—not because they're white-knuckling restriction, but because their blood sugar has more support.
Curious what this looks like day to day? Read more in Insulin Resistance Symptoms: How to Know If You Have It Before It Becomes Diabetes.
Take the Free Blood Sugar Check
Ten quick yes/no questions. This isn't a diagnosis—it's a starting point for a conversation.
Answer honestly based on how you've felt over the past few months.
- Do you carry extra weight around your middle that's hard to lose?
- Do you get an energy crash or brain fog after meals, especially lunch?
- Do you have strong sugar or carb cravings that feel hard to control?
- Do you feel hungry again soon after eating a full meal?
- Have you noticed skin tags, or darker velvety skin on your neck or underarms?
- Do you have rising blood pressure, high triglycerides, or low HDL cholesterol?
- Do you have irregular periods or a history of PCOS?
- Does a parent or sibling have type 2 diabetes?
- Did you have gestational diabetes, or are you in perimenopause or menopause?
- Do you sit for most of the day, sleep poorly, or live with ongoing stress?
Prefer to talk first? Call 203-434-9143.
Frequently Asked Questions
Can you have insulin resistance with a normal A1c?
Yes. Insulin resistance can develop before HbA1c rises, because the body may produce extra insulin to keep blood sugar in range. Fasting insulin testing, when appropriate, can help catch this earlier.
What are the first signs of insulin resistance?
Early clues can include weight gain around the middle, energy crashes after meals, strong sugar cravings, and rising blood pressure or triglycerides. Many people have no obvious symptoms at all, which is why lab work matters.
Does insulin resistance cause weight gain?
It can contribute. Higher insulin levels encourage the body to store fat, particularly around the abdomen, and can make weight loss more difficult.
Can insulin resistance be reversed?
In many cases, yes. Changes to nutrition, physical activity, sleep, and stress can meaningfully improve insulin sensitivity, especially when addressed early.
Will I need medication?
Not necessarily. Functional medicine looks at the bigger picture—nutrition, sleep, stress, activity, and family history—and builds a plan around root causes. Medication can be an important tool when it's appropriate, but it isn't the only one.
How long does it take to see improvement?
Many people notice steadier energy and fewer cravings within a few weeks of changing how they eat, move, and sleep. Lab values take longer to shift—HbA1c reflects roughly three months of blood sugar, so that's often when retesting makes sense.
Is there a functional medicine doctor for blood sugar near Stamford, Greenwich, or Westport?
Yes. Dr. Lisa Gengo is a functional medicine physician with a background in cardiac surgery, serving patients from Stamford, Greenwich, Darien, New Canaan, Norwalk, Westport, and communities throughout Fairfield County.
Ready to Get Ahead of Prediabetes?
If you recognize yourself in these signs, you don't have to wait for a diagnosis. Understanding what's happening now gives you the chance to change the direction of your health.
Book Free Discovery CallOr call 203-434-9143 to speak with our office in Stamford, CT.
Areas We Serve
Dr. Lisa Gengo is a functional medicine physician in Stamford, CT, serving Greenwich, Darien, New Canaan, Norwalk, Westport, Fairfield, Ridgefield, and the greater Fairfield County and Tri-State area. With a background as a cardiac surgery physician assistant, Dr. Gengo takes a root-cause approach to blood sugar, insulin resistance, prediabetes, and metabolic health, looking beyond a single lab value to the full picture of a patient's health.
This page is for educational purposes only and is not intended to diagnose, treat, or replace individualized medical advice from your healthcare provider.